Product design question
Design a product (digital or physical) to introduce a reward mechanism for cyclists (could be extrinsic or intrinsic).
- Product design
- Medium
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What this question tests
Open-ended product design skill, checking you can define a specific behavior change goal before jumping to a reward mechanism.
How to approach it
- Clarify the goal behind the reward, whether it's increasing cycling frequency, safety, or a specific outcome like commuting instead of driving.
- Identify the target segment, for example occasional or fair-weather cyclists who need a nudge versus committed cyclists who already ride regularly.
- List pain points or motivational gaps: inconsistent motivation, no visibility into personal progress, and no social or tangible payoff for choosing to bike.
- Propose the design: an app or device-based tracker awarding points for rides, redeemable for real-world perks like discounts, paired with a visible progress or streak mechanic.
- Prioritize intrinsic motivation elements, like streaks and personal milestones, alongside extrinsic rewards, since research suggests both together sustain habits better than either alone.
- Define success as sustained ride frequency over months, not just initial signups, and confirm whether this is a standalone product or integrated into an existing platform.
What a strong answer includes
- Chooses a specific target behavior, increasing ride frequency among occasional cyclists, rather than a vague 'get more people cycling' goal.
- Combines intrinsic (streaks, milestones) and extrinsic (redeemable rewards) mechanics deliberately, citing that habit formation research favors combining both.
- Proposes a concrete, plausible partner mechanism, redeemable discounts with local businesses, to fund extrinsic rewards sustainably.
- Sets a measurable success bar tied to sustained behavior over months, explicitly rejecting a signups-only metric as insufficient.
Common mistakes
- Proposing only an extrinsic point system with no attention to what sustains habits long-term.
- Not defining a specific target segment or behavior change goal upfront.
- Measuring success by signups alone, ignoring sustained usage.
Likely follow-up questions
- How would you fund the extrinsic rewards sustainably over time?
- How would you prevent the reward system from being gamed, like fake ride logging?
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop